As mentioned this isn't a typical overpayment scam as they are offering less than you want.
Thing to beware of are forged bankers draft (another crooks favorite) - have them draw the draft from the bank in front of you.
If cash get the cash paid on to your bank before handing over keys. The bank will spot fake notes for you snd save you feeling like a lemon
Better still establish thT the buyer is genuine first, got to be a German speaking tmrw on here who could make a quick call for you...
